Traverse winding machine



May 4, 1954 Filed Aug. 14, 1951 K. MOOS TRAVERSE WINDING MACHINE 2Sheets-Sheet 1 May 4, 1954 K. MOOS TRAVERSE WINDING MACHINE 2Sheets-Sheet 2 Filed Aug. 14, 1951 Patented May 4, 1954 UNITED STATESPATENT OFFICE TRAVERSE WINDING MACHINE Kaspar Moos, Uster, SwitzerlandApplication August 14, 1951, Serial No. 241,848

Claims priority, application Switzerland August 17, 1950 Claims. 1

The present invention deals with a winding machine for the production offirm or loose cylindrical or conical cross wound bobbins for single ordoubled yarn, such as cotton, cellulose, carded wool or worsted. yarn,flax, linen and mixed yarn.

Traverse winding machines are known, where the bobbin body is driven bya smooth shaft and thread guider, by a cam, or by a similar suitablemechanism. It has been shown in practice that winding machines of thisconstruction are suitable only for low winding speeds, on account of themechanism of the thread guider drive. Also, the thread guider tends toroughen the yarn.

In other traverse winding machines the bobbin body is driven either by asplit drum, which at the same time functions as a thread guider, or by asmooth shaft. In this case the thread guiders are rotating sheet metalwings, which are formed to produce the required winding. With these twosystems, the thread is roughened at medium and high winding speeds, i.e. the fibre is damaged.

Other traverse winding machines are known, where the spool body isdriven by a grooved drum, with the grooved drum functioning either byitself, or in combination with guides supporting the thread, as threadguider. In some types of traverse winding machines the thread has to betaken through a right angle round the thread guider between the brakeand the winding mechanism; this produces in the last third of the copvery high tensions, particularly at medium or high winding speeds, thesetension are very exacting and may cause the thread to break.

Direct drive of the bobbin by split or grooved drum has undesirableeffects on the yarn and on the formation of the bobbin because the toplayers of the thread are subject to greater wear than the bottom layersby the quickly rotating driving devices with their slots and grooves.

When the thread breaks directly in front of the cross-wound bobbin, theyarn is frequently wound round the rotating parts of the drive. If thesefaults are removed with sharp instruments, the thread guiding devicesare likely to become damaged, and this again may cause more trouble.

Certain yarns can be wound on reasonably utilisable bobbins only when thspeed has been reduced to a considerable extent, and after laboriousadjustments on the machines. This applies to cellulose flake yarns, knopyarns, voile yarn 105-2 (unsteamed) etc.

The object of the present invention is the construction of a traversewinding machine which is suitable for delicate and fine materials, suchas cellulose flake yarns, knop yarns, voile yarn -2 (unsteamed) andothers, where these materials can be wound at comparatively high maximumbobbin speeds with great care.

In accordance with the invention this will be obtained in the followingmanner: a grooved drum, acting as a thread guider to ensure theformation of the cross winding, is pressed against a cross-wound bobbin,which obtains its motion from the cylindrical surface of a drivingshaft, on which it rests. The thread runs at least approximately on atangent to the bottom diameter of the grooves. Both the holder of thecross wound bobbin and the holder of the thread guidegrooved drum areprovided with dampers to elimihate vibrations.

The holder of the thread guider-grooved drum could be a bearing forkpivoted on the driving shaft, the thread guider-grooved drum beingsupported in the fork so that it is parallel with the driving shaft. Itis convenient to fix a spring to the bearing fork so that the threadguidergrooved drum is lightly pressed against the cross wound bobbin,and to arrange a frictional drive so that the thread guider-grooved drumis driven from the driving shaft.

The drawings show examples of two constructions of the object of thepresent invention in diagrammatical form.

Fig. l is a side view, partly in section, of the essential parts, forthe purposes of the invention, of a traverse winding machine.

Fig. 2 shows the axis adjustment of the holder,

Fig. 3 shows the motion of the axis of the bobbin, effected by the axisadjustment, while the diameter increases.

Fig. 4 shows the side view of a modified form of the winding mechanismof a traverse winding machine, partly in section.

Fig. 5 shows the arrangement of the bobbin holder when used for conicalbobbins.

In Figs. 1 to 3, which show the first example, i is the driving shaft,supported bearings in the frame of the winding machine and driven in aknown manner at a variable speed. Driving drums 2 are fixed at regularintervals, side by side, on the driving shaft. These driving drums havea smooth cylindrical surface. Each drum works in conjunction with abobbin holder 3, which is pivoted on a pin d, fixed to the machineframe. Pin 5 of each bobbin holder supports the cross wound bobbin 6 sothat it can rotate, while its weight is carried by the drive drum 2; thebobbin is driven by friction from the drive drum. Holder 3 carries on apin I the fork 8 of a piston rod 9, which can pivot about pin I andcarries a piston I at its lower end. Piston I0 Works in a cylinder II,filled with oil, the cylinder pivots about a pin I2. Piston I0 andcylinder I I are a damping device which acts on the bobbin holder andeliminates vibrations of the bobbin. A holder I3, which acts as atwo-armed lever, is pivoted on the drive shaft I at each of the drivedrums 2. A pin I4, which is parallel to the drive shaft I, at the frontarm of the holder, carries the thread guider-grooved drum I5. This drumcan rotate on pin I4, and its grooves guide the thread in a known mannerto and fro, to form the cross winding, where the thread I6 is at leastapproximately tangential to the bottom I of the grooves. The rear end oflever I3 is connected to a piston rod I I through a bearing block I8 anda pin I3; the piston rod carries at its lower end a piston 20. Piston 26works in a cylinder 2|, filled with oil, which is pivoted on a pin 22. Atension spring 25, which acts on the screw 23 of the collar 24 on thepiston rod I'I, places a turning moment on holder I3, so that the threadguider-grooved drum is pressed only very lightly against bobbin 6. Afriction roller 2'! supported on shaft 26 at the front end of lever l3engages on one side with the drive drum 2 and on the other side with thethread guider-grooved drum I5 and ensures that the latter is driven atthe same speed at which the thread runs through the guide groove. Thisreduces the friction of the thread against the grooved drum to aminimum. Also, the light pressure of the grooved drum against the bobbinis useful to avoid, as far aspossible, damage to the winding surface.The oil cylinder damper 23, 2|, which acts on the grooved drum holder,prevents vibrations of holder I3 and grooved drum I5. Owing to thesmooth running of bobbin and winding mechanism, free from vibration, auniform formation of the winding is obtained.

In the case of winding machines for conical bobbins, the cross Woundbobbin holder can move with its bearing block 3 axially on pin 4, asshown in the drawings. The axial motion is controlled by the angularmotion of holder 3, so that with the increase of the bobbin diameterfrom 6 to 6 the bobbin moves axially by a distance d, in order toproduce the conical top K of the bobbin. The axial motion of the crosswound bobbin, with respect to the bobbin holder 3, is obtained from twotubular cams 28, 29, where cam 28 is fixed to block 3, while cam 29 isfixed to pin 4 by means of a pin 30. 3| is a collar fixed to pin 4 bymeans of a pin 32, and 33 is a compression spring between collar 3 I andblock 3', which keeps holder 3 with its tubular cam 28 pressed againstthe fixed tubular cam 29. This method ensures that when the holder islifted because the bobbin diameter has increased, the cross wound bobbinis moved in an axial direction so that a conical face is formed at thethicker end of the bobbin.

The construction of the traverse winding machine in accordance with thesecond example (Figs. 4 and 5) is characterised by the fact that it canbe used for high winding speeds (up to 1000 m./min.). The reason forthis is that the weights of the quickly rotating parts are kept low andthat the braking action of the pivot bearings of the grooved drum isentirely removed.

The winding mechanism, which is one of several arranged in a row, isprovided with a bearing bracket 35, mounted on the machine as shown inthe drawings, Figs. 4 and. 5, I is the drive shaft. The bracket carriesat its free end on a pin 38 the bobbin drive drum 2, rotating on twoball races. The drum is provided with a belt pulley 31, and it is driventhrough a belt 38 from a belt pulley 39 keyed on the drive shaft I. Aholder I3, shaped like a lever, is pivoted on pin 36. This holdercarries on a pin I4 the thread guider-grooved drum I5. A friction roller21 is carried on a pin 26 on holder I3, said friction roller 21 being infrictional engagement on the one hand with the bobbin driving roller 2and on the other hand with the grooved thread guide drum I5 for drivingsaid roller 2 and drum I5. At the other end of holder I3, a dampingmechanism acts through its piston rod I! and bearing block I8 on a pinI9. The damping mechanism consists of a cylinder 2|, filled with oil,and a piston 20 which works in cylinder 2|, and is attached to pistonrod II. Cylinder 2| is pivoted at its lower end on a pin 22, which isfixed to the machine frame. A tension spring 25 acts on a collar 24 onpiston rod I7, the lower end of the spring is held by a screw 40 incylinder 2 I. Tension spring 25 acts through piston rod I'I on theholder I3 so that the thread guidergrooved drum I5, which runs inhearings in the holder I3, is pressed lightly against cross wound bobbin6, which rests on the drive drum 2. The bobbin is at the free end of abobbin holder 3, and the holder 3 is pivoted through a pin I on fork 8.The piston rod 9 of an oil damping device is connected to the centre ofthe bobbin holder 3 by means of a fork 8. At the lower end of the oildamping device a piston I9 works in an oil filled cylinder II. Thiscylinder is pivoted at its lower end on a pin I2 fixed to the machineframe.

The weight of bobbin 6 is carried by the bobbin drive drum 2, whichagain is carried through holder I3 on the drive shaft I. Holder I3,which pivots on shaft 36, moves almost without friction and, owing tothe action of spring 25, presses the thread guider-grooved drum I5lightly against the cross wound bobbin 6. The vibrations of the thread Fduring the winding operation, and which are transmitted to the bobbinholder 3 and also to the holder of the thread guider-grooved drum, areeliminated by the oil dampers 20, 2| and I0, II.

Additional controls are not required for the bobbin holders of machinesused for the production of cylindrical cross wound bobbins. But in thecase of winding machines for conical bobbins an automatic control devicemust be provided which imparts to the bobbin holder during its angularmotion, caused by the building-up of the bobbin, a motion in its axialdirection so that the end with the larger bobbin diameter form a conicalface, which makes a stronger winding. This control device comprises twotubular earns 28 and 29 on pin 4, which are adjacent with their camprofiles touching; the first one is the bearing for the bobbin holder,it can slide and pivot on pin I, while the other one is fixed to pin 4by means of a set screw 43. A compression spring 33 between collar 3|,fixed to pin 4, and the bobbin holder bearing presses the tubular cam 23of bobbin holder I3 against the fixed tubular cam 29, so that angularmotion of the bobbin holder, owing to the build-up of the bobbinproduces at the same time an axial displacement of the bobbin holder.

It will be noted that in the modification of the machine according tothe present invention, as hereinbefore described and exemplified in Fig.4

of the drawings, shaft 36 does not rotate with the drive drum 2, but isconstructed as a stationary bearing. pin, which supports the bobbindrive drum through ball races. This construction enables the rotatingmass of drum 2 to be kept low, so that the winding speed can beincreased without increasing the danger of breaking the thread. Also,the elimination of the braking action of holder I3 is convenient for theincrease of the winding speed.

While the invention has been described in detail with respect to a nowpreferred example and embodiment of the invention it will be understoodby those skilled in the art after understanding the invention, thatvarious changes and modifications may be made Without departing from thespirit and scope of the invention and it is intended, therefore, tocover all such changes and modifications in the appended claims.

Having thus described my invention, I claim as new and desire to secureby Letters Patent:

1. In a traverse winding machine, a movable bobbin holder for guiding across-wound bobbin along a predetermined path, and including means forrotatably supporting the bobbin, a driving drum for rotating the bobbinand adapted to engage thread wound on said bobbin for moving said bobbinalong said predetermined path, a grooved thread guide drum adapted to bepressed against the periphery of the cross wound bobbin, for guiding thethread for traverse winding of the bobbin, a shaft for said guide drum,a second movable holder for said guide drum shaft, a damper memberconnected to the bobbin holder, and a damping member connected to thesecond holder, for reducing vibration of said holders.

2. In a traverse winding machine, a bobbin holder rotatably supporting abobbin, drive means for rotating the bobbin, a grooved thread guide drumadapted to be pressed against the periphery of the cross wound bobbin,for guiding the traverse winding of the bobbin, a second shaft mountedon said lever and carrying the grooved thread guide drum, a springacting upon said lever so as to gently press the thread guide drumagainst the cross wound bobbin, and a friction drive roller driving thethread guide drum from said driving means.

3. In a traverse winding machine, a movable bobbin holder for guiding across-Wound bobbin along a predetermined path, and including means forrotatably supporting the bobbin, a driving drum for rotating the bobbinand adapted to engage thread wound on said bobbin for moving said bobbinalong said predetermined path, a grooved thread guide drum adapted to bepressed against the periphery of the cross wound bobbin, for guiding thetraverse winding of the bobbin, means for guiding the thread to be woundin such a way that it runs at least approximately tangentially to theinternal diameter of the groove in the thread guide drum, a drivingshaft supporting and driving said driving drum, a lever pivoted on thedriving shaft, a second shaft mounted on said lever and carrying thegrooved thread guide drum, a spring acting upon said lever so as togently press the thread guide drum against the cross wound bobbin.

4. In a traverse winding machine, a movable bobbin holder for guiding across-wound bobbin along a predetermined path, and including means forrotatably supporting the bobbin, a driving drum for rotating the bobbinand adapted to engage thread Wound on said bobbin for moving said bobbinalong said predetermined path, a

grooved thread guide drum adapted to be pressed against the periphery ofthe cross Wound bobbin, for guiding the traverse Winding of the bobbin,a driving shaft supporting and driving said driving drum, a two-armedlever pivoted on the driving shaft, a second shaft mounted on one arm ofsaid two-armed lever and carrying the grooved thread guide drum, atension spring acting upon the other arm of said two-armed lever, adamp- ,ing member adapted to reduce the vibration of said two-armedlever and comprising a cylinder and piston arrangement and a piston rodwhich is operatively connected with said other arm, and a friction driveroller driving the thread guide drum from the driving drum.

5. In a traverse winding machine, a movable bobbin holder for guiding across-wound bobbin along a predetermined path, and including means forrotatably supporting the bobbin, a driving drum for rotating the bobbinand adapted to engage thread Wound on said bobbin for moving said bobbinalong said predetermined path, a grooved thread guide drum adapted to bepressed against the periphery of the cross wound bobbin, for guiding thetraverse Winding of the bobbin, means for guiding the thread to be woundin such a way that it runs at least approximately tangentially to theinternal diameter of the groove in the thread guide drum, a drivingshaft supporting and driving said driving drum, a two-armed leverpivoted on the driving shaft, a second shaft mounted on one arm of saidtwo-armed lever and carrying the grooved thread guide drum, a tensionspring acting upon the other arm of said two-armed lever, a dampingmember adapted to reduce the vibration of said two-armed lever andcomprising an oil-operated cylinder and piston arrangement and a pistonrod which is operatively connected with saidother arm, and a frictiondrive roller driving the thread guide drum from the driving drum.

6. In a traverse winding machine, a movable bobbin holder for guiding across-wound bobbin along a predetermined path, and including means forrotatably supporting the bobbin, a driving drum for rotating the bobbinand adapted to engage thread Wound on said bobbin for moving said bobbinalong said predetermined path, a pin rotatably supporting said drivingdrum, a grooved thread guide drum adapted to be pressed against theperiphery of the cross wound bobbin, for guiding the traverse winding ofthe bobbin, a second holder for said thread guide drum which holder ispivoted on said pin, a driving shaft, and means for driving said drivingdrum from the driving shaft, the masses of the rapidly rotating partsbeing constructed so as to have a lou weight.

7. In a traverse winding machine, a movable bobbin holder for guiding across-wound bobbin along a predetermined path, and including means forrotatably supporting the bobbin, a driving drum for rotating the bobbinand adapted to engage thread wound on said bobbin for moving said bobbinalong said predetermined path, a

pin rotatably supporting said driving drum, a grooved thread guide drumadapted to be pressed against the periphery of the cross wound bobbin,for guiding the traverse Winding of the bobbin, a second holder for saidthread guide drum which holder is pivoted on said pin, a driving shaft,and belt and pulley means including a belt pulley rigidly connected tosaid pin for driving said driving drum from the driving shaft.

8. In a traverse winding machine, in combination, a pivoted holderforguiding a crosswound bobbin along a predetermined path and including :apin rotatably supporting-.thebobbin; a first damping-member includinganoil cylinder and a piston; aifirstconnectingrod pivotally connected at.one end thereof to-said first-holder, and fixedly secured to said pistonat the other end thereof; ,adri-ving drumior rotating-the bobbin andadapted to engage thread wound on said bobbin forrmovingtsaid bobbinalong said predetermined path; a two-armed lever having a fixedpivotpoint; a grooved thread guide drum rotatably mounted ononearmuof saidlever;-a friction roller rotatably mounted on said one arm of saidtwo-armedlever and engaging. said driving drum ;-and.-said thread guidedrum for driving the .latter s-a second damping member including an oilcylinder and a piston movable therein; a secondcconnecting rod pivotallyconnected at one end thereof to the other arm of said two-armed leverand'secured to said piston on the other end thereof; and a spring actingon said other arm of said two-armed lever so as to turn the same and tourge said thread guide drum against the bobbin.

.9. An arrangement as claimed in claim 8 wherein said first connectingrod isconnected to saidfirst holder at a point locatedbetween thepivoting point thereof and said bobbin supporting pin.

10. An arrangement, as claimed in claim .9 wherein said drivingdrumisrotatable about an axis coinciding withthe pivoting axis of saidtwoarmed lever, and including a pulley connected to said driving drumfor rotation therewith, and belt and pulley means for driving saidpulley.

References Cited in the file Of this patent UNITEDSTATES PATENTS

